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US 4,905,245 AGranted
Semiconductor laser device and method of manufacturing same
AssigneeU.S. Philips Corporation
InventorsJohannes J. Ponjee, Rudolf P. Tijburg
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Abstract
The invention relates to a semiconductor laser device having a coating on surfaces of a semiconductor body intended for emanation of a laser beam. For protection of these surfaces against attack during operation of the laser this coating comprises a layer of a compound having at least one alkyl group.
Claims6
In a semiconductor laser device the improvement comprising
- a semiconductor body having surfaces for emanating a laser beam, and
- a coating disposed on said surfaces, said coating comprising
- at least one layer including a layer of an alkyl compound, said alkyl compound having converted groups of silanes at a surface of said layer, said groups of silanes being substituted with at least one alkyl group having at least one fluorine atom, and said compound having carbonic acids with an alkyl group having at least seven carbon atoms.
Dependencies are inferred from the claim text.